2020 2500hd program and add a key fob

Maninthesea · June 10, 2021

First question is how do I limit a search on this site to https://www.gm-trucks.com/forums/forum/240-2020-silverado-hd-sierra-hd/. Forum? When I use the search bar I get results from various GM forums.

The real question is I have a 2020 Silverado 2500 HD and only have one key fob, I purchased another one online and I believe I should be able to program it myself using some kind a top-secret procedure. Found procedures for Silverado’s but not sure if it applies to the 2020 2500 HD’s. I Do not want to attempt programming the new key fob and end up making the original one useless somehow. Any one succeeded yet or know where I can find information to do it thanks

jim

Edited June 10, 2021 by Maninthesea
Word salad

Maninthesea · June 10, 2021

Well Being impatient kind a guy that I am I Went researching and based on what I found on the eBay listing has compatible vehicles including 2019 Silverado’s 3500 and 2500 and1500, and the link below website on how to program a 2019 Silverado key fob I tried it out. If you only have one working fob you have to do the full learn procedure. Nerve wracking but came out good

https://www.ebay.com/itm/113678530382?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2648

https://www.programyourremote.com/classified/2020-chevrolet-silverado-keyless-entry-remote-fob-smart-key-programming-instructions-listing-9861.aspx

Edited June 10, 2021 by Maninthesea
Cleanup

Maninthesea · December 14, 2021

Update, the OL lost the extra so I ordered 3 more. This time things did not go so well.

Was tired From 14 hours of physical labor so my brain was probably a little bit mushy. During the first part of the procedure when It told me to start vehicle, I hit the start button and it didn’t start so I thought I’ll just use the remote start feature. Vehicle started and then the re-learn program for sensor wasn’t working and the remote would not shut off the vehicle. Also the start button on the dash would not shut off the vehicle and taking the Remotes 60 feet away behind the house would not shut off the vehicle, And nothing in the vehicle responded so I could not even open the hood. After about 10 or 15 minutes trying to figure out what the heck I was going to do the truck shut off. Tried to relearn procedure one more time. Then the Original remote would only lock and unlock the doors. I gave up and slept on it and I was using the other truck the next day anyway so that evening I started the whole procedure again. This time I was able to get through the whole procedure and the remotes did allow me to lock and unlock the doors and start the truck using the start button on the dash. However the remote start did not work on any of the remotes. I Called It a day and semi success. then the next morning all the remotes worked including remote start. I cannot explain what happened but I will say DO NOT Remote start the truck during the learning procedure. So it’s on my conclusion letting it sit overnight seems to help things out as evidenced in the key fob problem after tinting the windows thread.

Edited December 14, 2021 by Maninthesea